Door lifting device



FIG. 1 is a perspective view of a door lifting device showing my design;

FIG. 2 is a perspective view with the platform lifted up the guide poststhereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a rear side elevation view thereof;

FIG. 5 is a front elevation view with the platform lifted up the guidepost thereof; and,

FIG. 6 is a top plan view thereof.

The ornamental design for a door lifting device, as shown and described.